Radiator Tank Codes IA XI
 

Searching old threads on decoding and the only XI tank references I can find are from a 69 Chevelle with automatic cooler fittings. I have IA XI tanks in my 69 Chevelle manual with no fittings and am checking the application. VO1 heavy duty radiator by chance?

Thanks

Tank

Not sure this will help but a 02C Baltimore 69 Chevelle.
396 4spd.
Pic 2 is shroud number.

ADDING
Just looked on epay and you can buy a used- repaired shroud with this number for $1,499.99.
Says it is 1970 LS6 etc.
Looks to me it is 69 also.

BO coded radiators were the standard,used on all M/T 1969 & 1970 L-78 equipped chevelles.
It's the standard 5.2Qt.,3 row radiator for them,not the Heavy duty 4 row.
That std. radiator used a 4 row passenger side tank,but the drivers side IA tank was a 3 row,used on all M/T & Auto Trans Chevelles.
Both of these years/models also used the #165 fan shroud too.
When HD cooling~5.9Qt. was ordered on a BB 1969/70 L-78 Chevelle,the factory swapped out the Chevelles drivers IA tank for a wider 4 row tank turning it into either a PA~M/T or PD~A/T coded radiator.Also shaving down the extended fan shroud lip,both on the drivers side and bottom of the #165 shroud,to now accommodate the 4th row.

I was hoping that you would chime in. What was the XI used on?

The Xi tank is an Auto Trans 4 row passenger side tank.I have it in my '70 chevelle now,as well as in 2 other cars I own,all Chevrolet chevelles.
It was used on many A/T GM A-bodies,and Monte Carlo/Elcamino too.
Are you certain your Xi doesn't have two trans cooler lines plugged up?

You know, that might solve the mystery. They are certainly not plugged with a fitting but they could have been welded up and ground smooth during some prior radiator work. They did a good job if that’s what was done.

Agreed, mostly. :)
XI is an auto trans, but it was also used in 3-row, seeing that IA is a 3-row tank. Probable broadcast code is BJ.